document.write( "Question 96988: Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of the year is $1,710, how much did she invest at 8%? \n" ); document.write( "
Algebra.Com's Answer #70612 by coyote(32)\"\" \"About 
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Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of the year is $1,710, how much did she invest at 8%?\r
\n" ); document.write( "\n" ); document.write( "I=prt
\n" ); document.write( "1710 = .08x + .07(22000 - x)
\n" ); document.write( "Multiply both sides by 100 to remove the decimals
\n" ); document.write( "171,000 = 8x + 7x(22000 - x)
\n" ); document.write( "171,000 = 8x + 154,000 - 7x
\n" ); document.write( "171,000 = x + 154,000
\n" ); document.write( "17,000 = x\r
\n" ); document.write( "\n" ); document.write( "To check:
\n" ); document.write( "17,000 * 8% = 1360
\n" ); document.write( "(22,000 - 17,000) = 5,000 * 7% = 350
\n" ); document.write( "So 1360 + 350 =1710
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